The town of Raynham stands to reap $4 million a year in new revenue from a proposed slot parlor at the former dog track.

Neighboring Easton may get all the pain but none of the gain.

That’s a fate local officials are trying to avoid as they hammer out an agreement with the gaming applicant to offset traffic, public safety and other adverse impacts on the town.

Under Massachusetts’ gaming law, slot license proponents may enter into mitigation agreements with abutting communities to ease their hardships.

The applicant - Raynham Park LLC, a partnership of Greenwood Racing and Raynham Park owner George Carney - has been meeting with officials in West Bridgewater, Taunton, Bridgewater and Easton to work out such deals.

The communities must request mitigation by Oct. 4 - the deadline for the proponent to submit its Phase 2 plan to the state.

“They would have a better chance of getting their application approved if they had all these surrounding community agreements done as part of their application,” Town Administrator David Colton told selectmen Monday night.

Topping local concerns is a recent traffic study carried out by Raynham Park LLC that Easton officials believe underestimates the number of new daily vehicles trips generated by a proposal that calls for a 1,250 slots, a 1,000-seat auditorium and several restaurants and bars

Colton said the study was based on the square footage of the future venue and not on the usage method preferred by the state Department of Transportation.

The added traffic, an estimated 1,000 new vehicle trips during peak hours, would create havoc on local roads. Colton predicted that half the new drivers – or about 500 an hour - would exit Route 24 at 106 and head south at Route 138 to Raynham Park, clogging the already busy Routes 138 and 106 intersection and backing up traffic along both roads.

The proposed mitigation would adjust the timing of the traffic signals to allow more cars to travel south on Route 138 from 106.

This is “clearly insufficient,” Colton said.

“I think the mitigation they proposed is weak. I think their traffic study is flawed. I think we have a lot to talk about in terms of traffic,” he said.

Selectmen Chairman Colleen Corona said the added traffic and drunk drivers would burden the already short-staffed Easton police and fire departments that also provide mutual aid to Raynham public safety personnel.

She said the Route 106 and 138 intersection should be redesigned at the applicant’s cost and public safety issues must be addressed.

“I would make sure we receive some sort of financial benefit that funded additional positions to the police department and fire department that escalated every year,” she said.

She also voiced concern about a potential influx of casino employee families into the rental housing market and into the schools.

Page 2 of 2 - If Easton does not submit its mitigation requests by Oct. 4, it could request a 30-day extension and petition the Massachusetts Gaming Commission for more benefits in arbitration. But that process would be costly and not necessarily improve the results.

Any mitigation would pale before the estimated $4 million revenue package promised to Raynham, where voters overwhelmingly supported the slot proposal and host-community deal in August.

“Raynham has come to an agreement and they’re getting a lot of money and they’re getting tax revenue and they’re only getting half the traffic,” Colton said.

Other companies bidding for the slots-only license include the Baltimore-based Cordish Cos. For a facility in Leominster, and Penn National Gaming, which recently salvaged a failed bid for slots at Plainridge Racecourse in Plainville.